Results 1 to 10 of about 147,026 (262)

A finite-difference method for linearization in nonlinear estimation algorithms [PDF]

open access: yesModeling, Identification and Control, 1998
Linearizations of nonlinear functions that are based on Jacobian matrices often cannot be applied in practical applications of nonlinear estimation techniques. An alternative linearization method is presented in this paper.
Tor S. Schei
doaj   +1 more source

Nonlinear analysis in p-vector spaces for single-valued 1-set contractive mappings

open access: yesFixed Point Theory and Algorithms for Sciences and Engineering, 2022
The goal of this paper is to develop some fundamental and important nonlinear analysis for single-valued mappings under the framework of p-vector spaces, in particular, for locally p-convex spaces for 0 < p ≤ 1 $0 < p \leq 1$ .
George Xianzhi Yuan
doaj   +1 more source

Some Generalizations of Mulit-Valued Version of Schauder’s Fixed Point Theorem with Applications

open access: yesCubo, 2010
In this article, a generalization of a Kakutani-Fan fixed point theorem for multi-valued mappings in Banach spaces is proved under weaker upper semi-continuity condition and it is further applied to derive a generalized version of Krasnoselskii’s fixed ...
BAPURAO C DHAGE
doaj  

An alternative approach to nonlinear filtering

open access: yesStochastic Processes and their Applications, 1978
Abstract The structure of a nonlinear filter with observation process having continuous and discontinuous components is considered. The approach is based on the so-called “Bayes” formula for conditional expectations. “Fubini” type theorems for stochastic integrals are given and used to obtain the representations of an optimal estimate and of the ...
openaire   +2 more sources

An Alternative Approach for Nonlinear Optimization Problem with Caputo - Fabrizio Derivative

open access: yesITM Web of Conferences, 2018
In this study, a fractional mathematical model with steepest descent direction is proposed to find optimal solutions for a class of nonlinear programming problem. In this sense, Caputo-Fabrizio derivative is adapted to the mathematical model.
Evirgen Fırat, Yavuz Mehmet
doaj   +1 more source

Existence results of nonlocal boundary value problem for a nonlinear fractional differential coupled system involving fractional order impulses

open access: yesAdvances in Difference Equations, 2019
In this paper, we study the nonlocal boundary value problem for a nonlinear fractional differential coupled system with fractional order impulses. Applying Nonlinear Alternative of Leray–Schauder, we obtain some new existence results for this system.
Kaihong Zhao, Hui Huang
doaj   +1 more source

Existence and Uniqueness Results for a Coupled System of Nonlinear Fractional Differential Equations with Antiperiodic Boundary Conditions

open access: yesAbstract and Applied Analysis, 2014
This paper studies the existence and uniqueness of solutions for a coupled system of nonlinear fractional differential equations of order α,β∈(4,5] with antiperiodic boundary conditions.
Huina Zhang, Wenjie Gao
doaj   +1 more source

The Existence Results of Solutions to the Nonlinear Coupled System of Hilfer Fractional Differential Equations and Inclusions

open access: yesFractal and Fractional
This paper is dedicated to studying the existence results of solutions to the nonlinear coupled system of Hilfer fractional differential equations and inclusions, with multi-strip and multi-point mixed boundary conditions. Through tools such as the Leray-
Renhao Ma, Yuan Meng, Huihui Pang
doaj   +1 more source

Positive Solutions for Nonlinear Differential Equations with Periodic Boundary Condition

open access: yesJournal of Applied Mathematics, 2012
We study the existence of positive solutions for second-order nonlinear differential equations with nonseparated boundary conditions. Our nonlinearity may be singular in its dependent variable.
Shengjun Li, Li Liang, Zonghu Xiu
doaj   +1 more source

Fractional Langevin Equations with Nonlocal Integral Boundary Conditions

open access: yesMathematics, 2019
In this paper, we investigate a class of nonlinear Langevin equations involving two fractional orders with nonlocal integral and three-point boundary conditions.
Ahmed Salem   +2 more
doaj   +1 more source

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